Tagged Questions

For questions pertaining to the physiology and pathophysiology of sleep in humans and animals (e.g., sleep stages and their EEG patterns, sleep disturbances), along with psychological effects of sleep deprivation or fatigue.

So I was watching this youtube video (Only check 1:05 - 1:25) where it suggested we sleep because the brain needs rest to save/process all information we perceived throughout the day. I directly made ...

Can some one please confirm the below points,
Case: In case of a adult, the average adult sleep time required is 7.5 to 8 hours , Say if the person(aged between 23-29) has a sleep only for 6 hours or ...

I have long had interest in dreaming, and one of the defining features of ordinary dreams is that the dreamer either accepts the dream as "real life", or does not question the surroundings.
Compare ...

Background: After staying awake for an entire night without sleeping medication, some individuals report feeling tired while others report feeling euphoric and at some point begin to hallucinate with ...

If brain activity is measured using EEG, is the brain more active when sleeping and dreaming of doing something or doing the same thing when wake up?
Of course, if you do exercise (eg. running) when ...

Some time ago I opened a question comparing drug withdrawal and sleep deprivation symptoms.
In fact, my main objective for that question was to know if there was by any chance, a possibility to live ...

I had a very bad night tonight. I went to bed extremely tired, but could not sleep. Unfinished business and other worries were circling in my mind. After what felt like maybe twenty minutes of tossing ...

Put it more formally, how to let your mind subconsciously work on a research problem when you are not actively thinking about it, e.g., during sleep, dinner, walking, or shower?
Often I hear stories ...

I'm curious if there is any neurological mechanism that explains why falling asleep is easier in the dark.
I recognize that this isn't true universally -- a phobia of darkness might make it easier to ...

Background motivation: Is there is a way to correct sleeping patterns to go to bed at least at midnight, not later than that? If I do not feel tired/sleepy enough, can I "prime" or "cheat" myself to ...

As far as we know, sleep seems to be the part of the daily cycle when executive functions are resting and memories are fortifying. Many, but not all, of the functions that become dysfunctional upon ...

Personal sleep-deprivation study:
Recently, I posed a question that I'm sure many people find tough already: "Do I really need to sleep?", and so I tested myself, I spent two days without sleeping.
...

I know that Freud in his "Interpretation of dreams" provides a number of examples of events influencing dreams several days to several months after the event has occurred. For example, a person sees a ...

I used to have really bad night terrors back in the day, where I would think I was floating and I would wake up and actually my vision would be very fuzzy - so I just want to know..
What is actually ...

Regular split-brain patients still have some remaining connection between the hemispheres, but would it be possible for their hemispheres to fall asleep independent of the other?
What about when not ...

After my admittedly short research I could not find information which states that if a person is disturbed while their sleeping, let's say in NREM3 phase of their sleep cycle, and wakes up and then ...

Anecdotal background
I find that regardless of what time I go to bed, or how exhausted I am, I always wake up the next morning between 5 and 6am. This is despite my alarm being consistently set for ...

During rem sleep there are observed eye movements, which seem like they would correlate with the person visualizing their dreams.
Do their eye movements actually try to follow what they're dreaming ...

This Skeptics question touched on the subject, but I'm more focused on studies that have been conducted under highly controlled circumstances, like a university sleep lab.
We've all heard these old ...

I'm interested in sleep research, and sometimes in conversations with people the following idea gets discussed: "A person becomes aware at a certain time in the morning and feel great(while still in ...

After reading the article Regular sleeping hours really are good for children—if they are girls I started wondering what would be a good explanation for something such as sleep patterns have an affect ...

I'm a software engineer doing some research in order to figure out if developing some applications are worth the effort. This work is applied to computational devices including mobile devices and even ...

I'm interested in whether people can smell in their dreams.
Do people really experience smell in their dreams?
For example, if I dream of smelling a flower, will I feel the smell, too?
Is there any ...